K and K Windows: Ireland Reviews, Guarantee & Manufacturing

If you’re shopping for new windows or doors in Leinster, you’ve probably come across K&K Windows — they come up a lot in Irish home improvement circles. Founded in Wexford in 1995, they’ve built a reputation as one of Ireland’s larger fabricators and installers of uPVC and aluminium products. But what do you actually get for your money, and are they the right fit for your project? I dug into company records, customer feedback, and product specs to find out.

Founded: 1995 · Headquarters: Gorey, Co. Wexford · Products: uPVC & Aluminium Windows & Doors · Service Area: Leinster · Status: Irish-owned manufacturer

Here’s a condensed view of K&K Windows’ key company facts.

Who owns K and K windows?

K&K Windows Ltd is an Irish-owned company established in 1995 in Wexford, according to business listings on Houzz.ie (home improvement professional directory). The company has grown from its Gorey roots to become one of Ireland’s larger fabricators and installers of windows and doors.

Company background

The company operates from Craanford, Gorey, Co. Wexford, and is registered as K & K Windows Limited in Irish company records. Their profile on Houzz.ie describes them as specialists in the windows and glazing sector, offering services including double glazing, window installation, repair, replacement, and conservatories.

Ownership details from records

While the company is confirmed as Irish-owned, the specific names of individual owners or directors are not prominently disclosed on their public-facing profiles. This is common for smaller private limited companies in Ireland. The official company registry shows K & K Windows Limited with normal status.

For anyone considering a major home investment, the lack of publicly named directors matters less than the company’s actual track record — nearly 30 years of operation signals stability even without celebrity ownership.

Where are K and K windows manufactured?

K&K Windows operates from their manufacturing base in Gorey, Co. Wexford, serving customers across Leinster. According to their Houzz profile, they serve areas including County Wicklow, Wexford, Dublin, Leinster, County Meath, and Waterford. The company’s own website at KK Windows emphasizes local manufacturing for their product range.

Manufacturing location

Their Gorey facility handles both fabrication and installation, giving them control over quality from production through to fitting. Customer testimonials on KK Windows Testimonials highlight projects including 24 windows and multiple doors in single installations.

Leinster facilities

The focus on Leinster makes sense geographically — Gorey sits within easy reach of Dublin, Wicklow, and the broader eastern corridor where demand for home improvements is strongest. Their showroom allows customers to view styles, colors, and window ledges before committing, as shown in their case studies on KK Windows Case Studies.

Local manufacturing means K&K can respond faster to urgent replacement needs than importers shipping from abroad — a practical edge during renovation tight spots.

What is the guarantee on K&K windows?

K&K Windows offers a 10-year guarantee on their windows and doors, according to their official guarantee documentation published in May 2025. The Guardian Warm Roof system also carries a 10-year guarantee against leakage or condensation, as detailed in their KK Windows Guarantees PDF.

Warranty details

The guarantee covers both products and installation, protecting against substandard fitting or material degradation. According to the guarantee document, coverage extends to defects in materials and workmanship. The May 2025 update of their guarantee documentation suggests ongoing attention to warranty terms.

Coverage terms

Customer reviews on KK Windows Customer Reviews frequently mention satisfaction with the overall service, though specific warranty claim experiences aren’t detailed in available testimonials. For full terms, customers should request the complete guarantee documentation before signing a contract.

Guarantee satisfaction ultimately depends on reading the fine print — the 10-year coverage sounds generous, but exclusions and conditions determine real-world protection.

What are the best windows to buy in Ireland?

When evaluating windows in Ireland, energy performance is increasingly the deciding factor. BER (Building Energy Rating) ratings guide many buyers, with A-rated windows representing the current top tier for energy efficiency. The related company K Windows & Doors (based in Kildare) markets themselves as a leading provider of A-Rated Windows & Doors, according to their K Windows & Doors Website.

BER rating focus

A-rated windows can significantly reduce heat loss, which matters in Ireland’s climate where heating costs are a persistent concern. Both K&K Windows and similar Leinster manufacturers emphasize energy performance in their marketing. The specific BER ratings achieved by K&K products would need to be confirmed directly with the company for your specific product choices.

Top Irish options

Leading choices for Irish buyers include uPVC windows for cost-effectiveness and aluminium for durability and modern aesthetics. K&K Windows offers both materials, with their aluminium clad units receiving positive mentions in professional forums like Fine Homebuilding (contractor discussion). The 3.5-inch brick mould option available on their aluminium products appeals to certain build styles.

For Irish homeowners prioritizing energy bills over aesthetics, uPVC typically delivers better insulation value per euro spent — but the long-term durability trade-off favors aluminium in coastal areas.

What is the highest quality window brand?

Defining “highest quality” depends on your priorities — energy performance, aesthetics, longevity, or price. In the Irish market, established European brands like Kömmerling and Rehau compete with homegrown manufacturers like K&K Windows. Each has advocates, and buyer forums frequently debate the comparisons.

Quality factors

Key quality indicators include frame material, glazing specs, hardware quality, and installation standards. K&K Windows emphasizes their NSAI compliance and highest quality standards, as stated on their related site at K Windows & Doors Website. NSAI (National Standards Authority of Ireland) certification indicates products meet Irish regulatory requirements.

Irish contenders

Comparing K&K Windows to competitors: K&K focuses on Leinster-based service with nearly 30 years of experience. K Windows & Doors (a separate entity based in Naas, Co. Kildare) claims over 35 years of experience and emphasizes A-rated products. Both companies offer uPVC and aluminium options. The choice often comes down to local availability, specific product requirements, and pricing.

No single brand dominates across all quality dimensions — the “best” window for your project depends on site-specific factors like exposure, existing structure, and budget constraints.

The spec table below summarizes product offerings and key features to help buyers compare options.

“Would highly recommend K&K Windows, we were absolutely blown away by their efficiency, customer service and friendliness by all staff members we encountered.”

— Kerrie O’Neill, Customer (KK Windows Testimonial)

“The customer service was second to none from start to finish. And the workmanship was excellent, fast, efficient, clean and friendly.”

— Anonymous Customer Review (KK Windows Customer Reviews)

“I’ve used many of their alum. clad units. They’ve got an excellent product.”

— Contractor in Fine Homebuilding Forum (Fine Homebuilding)

Related reading: Plumbing Supplies in Ireland · Houses for Rent in Dublin

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